WAW, she had an affair, separating to "think"

[Card29]

And I'll post this separately since it is purely my opinion. I don't think kids or logistics are the biggest reasons to stick with a dying M. The biggest draw, for me, are the testimonials of those who have made it through the lowest of lows. Their love is deeper and more meaningful than ever before, and they are all thankful for their adversity. To quote Bruce Lee (2nd time I've posted this...):

Love is like a friendship caught on fire. In the beginning a flame, very pretty, often hot and fierce, but still only light and flickering. As love grows older, our hearts mature, and our love becomes as coals, deep-burning and unquenchable.

You have time to decide if you want to pursue that mature love with your W, or if you want to move on. I would not blame you either way.